How To Replace OIL COOLER LINES on Silverado & Sierra | Oil Leak Fix

Got a leaky Silverado or Sierra? Yup, me too! Today I am starting to tackle the leaks on my 2006 Chevy SilveradoMAX with a 6.0 Vortec, but it's the same process for a GMC Sierra. First item on the list is replacing the oil cooler lines! Mine have failed where the rubber line is crimped into the steel lines and it's just adding to the oily mess I am dealing with. This video is made to be a guide / demonstration on replacing your oil cooler lines yourself. It is only 3 bolts and two clips, the real struggle is there just isn't much room to work, especially on a truck with 4wd.
Parts I used (affiliate link)
Dorman 625-340 Oil Cooler Lines for 6.0
amzn.to/3UkVRYB
SuperClean Foam Degreaser (also available at Walmart)
amzn.to/4diWlav
Generally for SilveradoMax, 1500HD, 2500HD, but available on other models as well.
** DISCLAIMER: I am not a professional mechanic, do what I do at your own risk, I am not liable for your actions or ride. I am just showing how I work on my own stuff. **
Show your support for Classic Rides!! I HAVE CLASSICS AB MERCH NOW, PLEASE CHECK OUT THE STORE…
classics-are-b...
THANK YOU FOR YOUR SUPPORT!!!! Please like and subscribe if you can, it really helps out a small channel like mine with the KZbin machine, get wrenching my friends!! I am also open to discussing sponsor ships if you think your product would work well on the channel.
STAY UP TO DATE:
Instagram - @Classics_Are_Better
Facebook - @ClassicsAreBetter
Web - www.ClassicsAreBetter.com
Twitter - @TheClassicsAB
Please send me stickers, stuff, letters, drawings, etc…..
Classics Are Better
PO BOX 940
Argyle, TX 76226
Videos shot in HD or 4K !!!

[@autumnjeserich2689]

On my 02 2500HD my oil cooler lines looked like they had seen better days so when I dropped my oil pan to fix the pickup tube seal which I had to drop the front diff for anyway I decided to replace those lines while I'm at it. Bought the doorman lines. Within a month the high pressure line managed to get stuck into my power steering pulley pissed out all my oil and since of course I was going up a hill on a part of the interstate going through a mountain pass with no shoulder, by the time I was able to stop the engine was toast. Don't know if its a crappy design of the oil cooler lines or I just got unlucky with a part that shouldn't of passed QC because I swear the hard line was longer on the factory lines to where the rubber part couldn't end up in the power steering pump. Not saying don't replace them, but make sure its impossible for that soft part to hit a moving part. I thought bolting the bolt at the front of the engine would prevent that but got a nasty surprise and I don't want anyone else to go through the same misery I did.

[@CLASSICSAREBETTER]

Wow that sounds like no fun at all! Never thought about them walking over to a pully if they weren't secured well. If I ever have to do it again, I think id just make my own lines outta high pressure hose and that way I could put them wherever I wanted. Thank you for watching!

[@autumnjeserich2689]

When I get that truck running again I'm definitely planning on making my own lines and switching to an auxillary oil cooler if I can find a spot to fit it since i have the auxillary trans cooler option. Since I did the efan swap if I can ensure the accessory drive can't get to it it should be good. Don't know how I'd add hardline to the block but I figure i can probably add some metal braid to armor it and in the event that happened again I feel like the metal on metal would make noise to give me some indication. but on the bright side I got the motor to turnover yesterday and so far looking at the guts of it, it actually doesn't look that bad considering the failure it endured and the 275k miles. This platform is by far the most dependable I have ever worked with, but I come from working on 55-59 chevy trucks lol

[@reverandhale863]

You didnt have to take engine mounts or anything loose? Thats what i keep hearing

[@CLASSICSAREBETTER]

Nope didn't mess with the engine mounts at all, there is a single bolt clip mounted to the engine so maybe that's what they meant. Biggest hassle for me was working around the 4wd drive shaft, if it was 2wd I would have had significantly more room.

[@reverandhale863]

@CLASSICSAREBETTER mine is 4wd as well and a 2500hd with no lift. Idk if that makes a difference or not. I'm was just curious because mine is leaking pretty bad, I'm either gonna replace it or put a blocking plate on it

[@CLASSICSAREBETTER]

@@reverandhale863 It would be a lot better for your engine if your able to keep it. You can get a little more room to work if you remove your oil filter or front drive shaft during your install. I would get it as high off the ground as you safely can (always us jack stands) and give it a shot, a blocking plate can always be plan B if you can't get it to work. It's all just nuts and bolts, just gotta stay after it. Good luck!

[@reverandhale863]

@CLASSICSAREBETTER only reason I contemplated a blocking plate is because it's a 2500 but I really don't tow heavy or run it hard. I'm gonna think on it a couple days before I make a decision. Thanks for the input